Combined cycle power device

ABSTRACT

The combined cycle power device of the present invention belongs to the field of energy and power technology. A combined cycle power device comprises an expander, the second expander, a compressor, a pump, a high-temperature heat exchanger, the second high-temperature heat exchanger, a condenser and an evaporator. An evaporator connects the second expander. The condenser passes through a pump and connects the evaporator. The second expander passes through the second high-temperature heat exchanger and connects the high-temperature heat exchanger. The compressor connects the high-temperature heat exchanger. The high-temperature heat exchanger connects an expander. The evaporator connects the compressor and the condenser. The expander connects the evaporator. The high-temperature heat exchanger and the second high-temperature heat exchanger connect the outside. The condenser connects the outside. The expander and the second expander connect the compressor and transmit power.

FIELD

The present invention belongs to the flied of energy and powertechnology.

BACKGROUND

Cold demand, heat demand and power demand are common in human life andproduction. It is an important way to obtain and provide power by theconversion of thermal energy into mechanical energy. In general, thetemperature of heat source reduces and varies with the release of heat.When fossil fuels are used as the primary energy, the heat source hasthe dual characteristics of both high-temperature and variabletemperature. This makes it is difficult to transform more heat energyinto mechanical energy using the power device based on a single thermalcycle. For high-quality fuel, the traditional gas-steam combined cyclecan be used to obtain a high thermal efficiency. However, there arestill some problems to be solved, such as high cost, large investmentand low thermal efficiency to be improved.

Take the vapor power device with the outside combustion for example, itsheat source has the dual characteristics of high-temperature andvariable temperature. For those vapor power devices based on the Rankinecycle, the material's temperature resistance and pressure resistanceabilities and safety concerns limit the parameters of the cycle'sworking medium. Therefore, there is a big temperature difference betweenthe working medium and the heat source, which leads to big irreversibleloss and low efficiency. This means that there is great potential toimprove the thermal efficiency.

Humans need to use heat energy simply, actively, efficiently forachieving power. Therefore, the present invention provides a combinedcycle power device with high thermal efficiency, strong safety,adaptation to high-temperature heat source or variable temperature heatsource and response to various fuels.

THE CONTENTS OF THE PRESENT INVENTION

The combined cycle power device are mainly provided in the presentinvention, and the specific contents of the present invention are asfollows:

1. A combined cycle power device comprises an expander, the secondexpander, a compressor, a pump, a high-temperature heat exchanger, thesecond high-temperature heat exchanger, a condenser and an evaporator.An evaporator has a vapor channel connected the second expander afterthat a condenser has a liquid refrigerant pipe which passes through apump and connects the evaporator, the second expander has a vaporchannel which passes through the second high-temperature heat exchangerand connects the high-temperature heat exchanger, a compressor has avapor channel connected the high-temperature heat exchanger, thehigh-temperature heat exchanger has a vapor channel connected anexpander, the evaporator has a low-pressure vapor channel connected thecompressor and the condenser respectively after that the expander has alow-pressure vapor channel connected the evaporator. Thehigh-temperature heat exchanger and the second high-temperature heatexchanger also have heat source medium channels connected the outside,the condenser has the cooling medium channel connected the outside, orthe evaporator has the heat source medium channel connected the outside,the expander and the second expander connects the compressor andtransmit power. Or the expander and the second expander connect thecompressor and the pump and transmit power.

2. A combined cycle power device comprises an expander, the secondexpander, a compressor, a pump, a high-temperature heat exchanger, thesecond high-temperature heat exchanger, a condenser and an evaporator.An evaporator has a vapor channel connected the second expander afterthat a condenser has a liquid refrigerant pipe which passes through apump and connects the evaporator, the second expander has a vaporchannel which passes through the second high-temperature heat exchangerand connects the high-temperature heat exchanger, a compressor has avapor channel connected the high-temperature heat exchanger, thehigh-temperature heat exchanger has a vapor channel connected anexpander, the expander has a low-pressure vapor channel connected thesecond high-temperature heat exchanger, the evaporator has alow-pressure vapor channel connected the compressor and the condenserrespectively after that the second high-temperature heat exchanger has alow-pressure vapor channel connected the evaporator. Thehigh-temperature heat exchanger has the heat source medium channelconnected the outside, the second high-temperature heat exchanger mayalso has the heat source medium channel connected the outside, thecondenser has the cooling medium channel connected the outside, or theevaporator has the heat source medium channel connected the outside, theexpander and the second expander connect the compressor and transmitpower. Or the expander and the second expander connect the compressorand the pump and transmit power.

3. A combined cycle power device comprises an expander, the secondexpander, a compressor, a pump, a high-temperature heat exchanger, thesecond high-temperature heat exchanger, a condenser, an evaporator and aheating unit. An evaporator has a vapor channel connected the secondexpander after that a condenser has a liquid refrigerant pipe whichpasses through a pump and connects the evaporator, the second expanderhas a vapor channel which passes through the second high-temperatureheat exchanger and connects the high-temperature heat exchanger, acompressor has a vapor channel connected the high-temperature heatexchanger, the high-temperature heat exchanger has a vapor channelconnected an expander, a heating unit has a low-pressure vapor channelconnected the compressor and the condenser respectively after that theexpander has a low-pressure vapor channel connected the heating unit.The high-temperature heat exchanger and the second high-temperature heatexchanger also have heat source medium channels connected the outside,the condenser has the cooling medium channel connected the outside, theevaporator has the heat source medium channel connected the outside, theheating unit has the heated medium channel connected the outside, theexpander and the second expander connect the compressor and transmitpower. Or the expander and the second expander connect the compressorand the pump and transmit power.

4. A combined cycle power device comprises an expander, the secondexpander, a compressor, a pump, a high-temperature heat exchanger, thesecond high-temperature heat exchanger, a condenser, an evaporator and ahigh-temperature regenerator. An evaporator has a vapor channelconnected the second expander after that a condenser has a liquidrefrigerant pipe which passes through a pump and connects theevaporator, the second expander has a vapor channel which passes throughthe second high-temperature heat exchanger and the high-temperatureregenerator and connect the high-temperature heat exchanger, acompressor has a vapor channel which passes through the high-temperatureregenerator and connects the high-temperature heat exchanger, thehigh-temperature heat exchanger has a vapor channel connected anexpander, the expander has a low-pressure vapor channel connected thehigh-temperature regenerator, the evaporator has a low-pressure vaporchannel connected the compressor and the condenser respectively afterthat the high-temperature regenerator has a low-pressure vapor channelconnected the evaporator. The high-temperature heat exchanger and thesecond high-temperature heat exchanger also have heat source mediumchannels connected the outside, the condenser has the cooling mediumchannel connected the outside, or the evaporator has the heat sourcemedium channel connected the outside, the expander and the secondexpander connect the compressor and transmit power. Or the expander andthe second expander connect the compressor and the pump and transmitpower.

5. A combined cycle power device comprises an expander, the secondexpander, a compressor, a pump, a high-temperature heat exchanger, thesecond high-temperature heat exchanger, a condenser, an evaporator and ahigh-temperature regenerator. An evaporator has a vapor channelconnected the second expander after that a condenser has a liquidrefrigerant pipe which passes through a pump and connects theevaporator, the second expander has a vapor channel which passes throughthe second high-temperature heat exchanger and the high-temperatureregenerator connect the high-temperature heat exchanger, a compressorhas a vapor channel which passes through the high-temperatureregenerator and connects the high-temperature heat exchanger, thehigh-temperature heat exchanger has a vapor channel connected anexpander, the expander has a low-pressure vapor channel which passesthrough the high-temperature regenerator connects the secondhigh-temperature heat exchanger, the evaporator has a low-pressure vaporchannel connected the compressor and the condenser respectively afterthat the second high-temperature heat exchanger has a low-pressure vaporchannel connected the evaporator. The high-temperature heat exchangerhas the heat source medium channels connected the outside, the secondhigh-temperature heat exchanger has the heat source medium channelsconnected the outside, the condenser has the cooling medium channelconnected the outside, or the evaporator has the heat source mediumchannel connected the outside, the expander and the second expanderconnect the compressor and transmit power. Or the expander and thesecond expander connect the compressor and the pump and transmit power.

6. A combined cycle power device comprises an expander, the secondexpander, a compressor, a pump, a high-temperature heat exchanger, thesecond high-temperature heat exchanger, a condenser, and an evaporator.An evaporator has a vapor channel connected with the second expanderafter that a condenser has a liquid refrigerant pipe which passesthrough a pump and connects the evaporator, the second expander has avapor channel which passes through the second high-temperature heatexchanger and connects the expander, a compressor has a vapor channelconnects the high-temperature heat exchanger, the high-temperature heatexchanger has a vapor channel which passes through a intermediate vaporinlet channel and connects the expander, the evaporator has alow-pressure vapor channel connected with the compressor and thecondenser respectively after that the expander has a low-pressure vaporchannel connected with the evaporator. The high-temperature heatexchanger and the second high-temperature heat exchanger also have heatsource medium channels connected the outside, the condenser has thecooling medium channel connected with the outside, or the evaporator hasthe heat source medium channel connected with the outside, the expanderand the second expander connect the compressor and transmit power. Orthe expander and the second expander connect the compressor and the pumpand transmit power.

7. A combined cycle power device comprises an expander, the secondexpander, a compressor, a pump, a high-temperature heat exchanger, thesecond high-temperature heat exchanger, a condenser and an evaporator,wherein an evaporator has a vapor channel connected the second expanderafter that a condenser has a liquid refrigerant pipe which passesthrough a pump and connects the evaporator, the second expander has avapor channel connected the second high-temperature heat exchanger, thesecond high-temperature heat exchanger has a vapor channel which passesthrough a intermediate vapor inlet channel and connects a expander, acompressor has a vapor channel which passes through the high-temperatureheat exchanger and connects the expander, the evaporator has alow-pressure vapor channel connected the compressor and the condenserrespectively after that the expander has a low-pressure vapor channelconnected the evaporator, wherein the high-temperature heat exchangerand the second high-temperature heat exchanger also have heat sourcemedium channels connected the outside, the condenser has the coolingmedium channel connected the outside, or the evaporator (8) has the heatsource medium channel connected the outside, the expander and the secondexpander connect the compressor and transmit power. Or the expander andthe second expander connect the compressor and the pump and transmitpower.

8. A combined cycle power device comprises an expander, the secondexpander, a compressor, a pump, a high-temperature heat exchanger, thesecond high-temperature heat exchanger, a condenser, an evaporator and ahigh-temperature regenerator. An evaporator has a vapor channelconnected the second expander after that a condenser has a liquidrefrigerant pipe which passes through a pump and connects theevaporator, the second expander has a vapor channel connected the secondhigh-temperature heat exchanger, the high-temperature heat exchanger hasa vapor channel which passes through a intermediate vapor inlet channeland connects the expander, a compressor has a vapor channel which passesthrough the high-temperature regenerator and the high-temperature heatexchanger and connects the expander, the expander has a low-pressurevapor channel connected the high-temperature regenerator, the evaporatorhas a low-pressure vapor channel connected the compressor and thecondenser respectively after that the high-temperature regenerator has alow-pressure vapor channel connected the evaporator. Thehigh-temperature heat exchanger and the second high-temperature heatexchanger also have heat source medium channels connected the outside,the condenser has the cooling medium channel connected the outside, orthe evaporator has the heat source medium channel connected the outside,the expander and the second expander connect the compressor and transmitpower. Or the expander and the second expander connect the compressorand the pump and transmit power.

9. A combined cycle power device comprises an expander, the secondexpander, a compressor, a pump, a high-temperature heat exchanger, thesecond high-temperature heat exchanger, a condenser, an evaporator andthe third expander. An evaporator has a vapor channel connected thesecond expander after that a condenser has a liquid refrigerant pipewhich passes through a pump and connects the evaporator, the secondexpander has a vapor channel which passes through the secondhigh-temperature heat exchanger and connects the third expander, thethird expander has a low-pressure vapor channel connected theevaporator, a compressor has a vapor channel which passes through thehigh-temperature heat exchanger and connects the evaporator, theevaporator has a low-pressure vapor channel connected the secondhigh-temperature heat exchanger, the evaporator has a low-pressure vaporchannel connected the compressor and the condenser respectively, Thehigh-temperature heat exchanger and the second high-temperature heatexchanger also have heat source medium channels connected the outside,the condenser has the cooling medium channel connected the outside, orthe evaporator has the heat source medium channel connected the outside,the expander, the second expander and the third expander connect thecompressor and transmit power. Or the expander, the second expander andthe third expander connect the compressor and the pump and transmitpower.

10. A combined cycle power device comprises an expander, the secondexpander, a compressor, a pump, a high-temperature heat exchanger, thesecond high-temperature heat exchanger, a condenser, an evaporator and aheating unit. An evaporator has a vapor channel connected the secondexpander after that a condenser has a liquid refrigerant pipe whichpasses through a pump and connects the evaporator, the second expanderhas a vapor channel which passes through the second high-temperatureheat exchanger and connects the high-temperature heat exchanger, acompressor has a vapor channel connected the high-temperature heatexchanger, the high-temperature heat exchanger has a vapor channelconnected an expander, An evaporator has a low-pressure vapor channelconnected the heating unit after that the expander has a low-pressurevapor channel connected the evaporator, a heating unit has alow-pressure vapor channel connected the compressor and the condenserrespectively. The high-temperature heat exchanger and the secondhigh-temperature heat exchanger also have heat source medium channelsconnected the outside, the condenser has the cooling medium channelconnected the outside, the evaporator has the heat source medium channelconnected the outside, the heating unit has the heated medium channelconnected the outside, the expander and the second expander connect thecompressor and transmit power. Or the expander and the second expanderconnect the compressor and the pump and transmit power.

11. A combined cycle power device comprises an expander, the secondexpander, a compressor, a pump, a high-temperature heat exchanger, thesecond high-temperature heat exchanger, a condenser, an evaporator, thesecond compressor and the third high-temperature heat exchanger. Anevaporator has a vapor channel connected the second expander after thata condenser has a liquid refrigerant pipe which passes through a pumpand connects the evaporator, the second expander has a vapor channelwhich passes through the second high-temperature heat exchanger andconnects the high-temperature heat exchanger, a compressor has a vaporchannel connected the high-temperature heat exchanger, thehigh-temperature heat exchanger has a vapor channel connected the secondcompressor, the second compressor has a vapor channel which passesthrough the third high-temperature heat exchanger connects an expander,the evaporator has a low-pressure vapor channel connected the compressorand the condenser respectively after that the expander has alow-pressure vapor channel connected the evaporator. Thehigh-temperature heat exchanger, the second high-temperature and thethird high-temperature heat exchanger also have heat source mediumchannels connected the outside, the condenser has the cooling mediumchannel connected the outside, or the evaporator has the heat sourcemedium channel connected the outside, the expander and the secondexpander connect the compressor and the second compressor and transmitpower. Or the expander and the second expander connect the compressorand the pump and transmit power.

12. A combined cycle power device comprises an expander, the secondexpander, a compressor, a pump, a high-temperature heat exchanger, thesecond high-temperature heat exchanger, a condenser, an evaporator, thethird expander and the third high-temperature heat exchanger. Anevaporator has a vapor channel connected the second expander after thata condenser has a liquid refrigerant pipe which passes through a pumpand connects the evaporator, the second expander has a vapor channelwhich passes through the second high-temperature heat exchanger andconnects the high-temperature heat exchanger, a compressor has a vaporchannel connected the high-temperature heat exchanger, thehigh-temperature heat exchanger has a vapor channel connected the thirdexpander, the third expander has a vapor channel which passes throughthe third high-temperature heat exchanger connects an expander, theevaporator has a low-pressure vapor channel connected the compressor andthe condenser respectively after that the expander has a low-pressurevapor channel connected the evaporator. The high-temperature heatexchanger, the second high-temperature and the third high-temperatureheat exchanger also have heat source medium channels connected theoutside, the condenser has the cooling medium channel connected theoutside, or the evaporator has the heat source medium channel connectedthe outside, the expander, the second expander and the third expanderconnect the compressor and the second compressor and transmit power. Orthe expander, the second expander and the third expander connect thecompressor and the pump and transmit power.

13. A combined cycle power device comprises an expander, the secondexpander, a compressor, a pump, a high-temperature heat exchanger, thesecond high-temperature heat exchanger, a condenser, an evaporator, ahigh-temperature regenerator, the second compressor and the thirdhigh-temperature heat exchanger. An evaporator has a vapor channelconnected the second expander after that a condenser has a liquidrefrigerant pipe which passes through a pump and connects theevaporator, the second expander has a vapor channel which passes throughthe second high-temperature heat exchanger and the high-temperatureregenerator and connects the high-temperature heat exchanger, acompressor has a vapor channel which passes through the high-temperatureregenerator and connects the high-temperature heat exchanger, thehigh-temperature heat exchanger has a vapor channel connected the secondcompressor, the second compressor has a vapor channel which passesthrough the third high-temperature heat exchanger connects an expander,the expander has a low-pressure vapor channel connected thehigh-temperature regenerator, the evaporator has a low-pressure vaporchannel connected the compressor and the condenser respectively afterthat the high-temperature regenerator has a low-pressure vapor channelconnected the evaporator. The high-temperature heat exchanger, thesecond high-temperature and the third high-temperature heat exchangeralso have heat source medium channels connected the outside, thecondenser has the cooling medium channel connected the outside, or theevaporator has the heat source medium channel connected the outside, theexpander and the second expander connect the compressor and the secondcompressor and transmit power. Or the expander and the second expanderconnect the compressor and the pump and transmit power.

14. A combined cycle power device comprises an expander, the secondexpander, a compressor, a pump, a high-temperature heat exchanger, thesecond high-temperature heat exchanger, a condenser, an evaporator, ahigh-temperature regenerator, the third expander and the thirdhigh-temperature heat exchanger. An evaporator has a vapor channelconnected the second expander after that a condenser has a liquidrefrigerant pipe which passes through a pump and connects theevaporator, the second expander has a vapor channel which passes throughthe second high-temperature heat exchanger and a high-temperatureregenerator and connects the high-temperature heat exchanger, acompressor has a vapor channel which passes through the high-temperatureregenerator and connects the high-temperature heat exchanger, thehigh-temperature heat exchanger has a vapor channel connected the thirdexpander, the third expander has a vapor channel which passes throughthe third high-temperature heat exchanger connects an expander, anexpander has a low-pressure vapor channel connected the high-temperatureregenerator, the evaporator has a low-pressure vapor channel connectedthe compressor and the condenser respectively after that thehigh-temperature regenerator has a low-pressure vapor channel connectedthe evaporator. The high-temperature heat exchanger, the secondhigh-temperature and the third high-temperature heat exchanger also haveheat source medium channels connected the outside, the condenser has thecooling medium channel connected the outside, or the evaporator has theheat source medium channel connected the outside, the expander, thesecond expander and the third expander connect the compressor and thesecond compressor and transmit power. Or the expander, the secondexpander and the third expander connect the compressor and the pump andtransmit power.

15. The device according to any one of claim 1-14, the low temperatureregenerator and the second pump are added. That the condenser has aliquid refrigerant pipe which passes through a pump and connects theevaporator is adjusted to that the condenser has a liquid refrigerantpipe which passes through a pump and connects a low temperatureregenerator, the compressor adds the vapor extraction channel connectedthe low temperature regenerator, the low temperature regenerator has aliquid refrigerant pipe which passes through the second pump andconnects with the evaporator. A combined cycle power device is formed.

BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a type 1 example general flow chart of a combined cycle powerdevice provided in the present invention.

FIG. 2 is a type 2 example general flow chart of a combined cycle powerdevice provided in the present invention.

FIG. 3 is a type 3 example general flow chart of a combined cycle powerdevice provided in the present invention.

FIG. 4 is a type 4 example general flow chart of a combined cycle powerdevice provided in the present invention.

FIG. 5 is a type 5 example general flow chart of a combined cycle powerdevice provided in the present invention.

FIG. 6 is a type 6 example general flow chart of a combined cycle powerdevice provided in the present invention.

FIG. 7 is a type 7 example general flow chart of a combined cycle powerdevice provided in the present invention.

FIG. 8 is a type 8 example general flow chart of a combined cycle powerdevice provided in the present invention.

FIG. 9 is a type 9 example general flow chart of a combined cycle powerdevice provided in the present invention.

FIG. 10 is a type 10 example general flow chart of a combined cyclepower device provided in the present invention.

FIG. 11 is a type 11 example general flow chart of a combined cyclepower device provided in the present invention.

FIG. 12 is a type 12 example general flow chart of a combined cyclepower device provided in the present invention.

FIG. 13 is a type 13 example general flow chart of a combined cyclepower device provided in the present invention.

FIG. 14 is a type 14 example general flow chart of a combined cyclepower device provided in the present invention.

FIG. 15 is a type 15 example general flow chart of a combined cyclepower device provided in the present invention.

FIG. 16 is a type 16 example general flow chart of a combined cyclepower device provided in the present invention.

FIG. 17 is a type 17 example general flow chart of a combined cyclepower device provided in the present invention.

In the figures, 1—expander, 2—the second expander, 3—compressor, 4—pump,5—high temperature heat exchanger, 6—the second high-temperature heatexchanger, 7—condenser, 8—evaporator (waste heat boiler), 9—heatingunit, 10—high temperature regenerator, 11—the third expander, 12—thesecond compressor, 13—the third high-temperature heat exchanger, 14—lowtemperature regenerator, 15—the second pump.

DETAILED DESCRIPTION

The first thing to note is that, when describing the cycle's structuresand processes, the processes will not be repeatedly described if notnecessary, and the obvious processes will not be described. The detaileddescription of the present invention is as follows:

The combined cycle power device in FIG. 1 works as follows:

(1) Device structure. The combined cycle power device comprises anexpander, the second expander, a compressor, a pump, a high-temperatureheat exchanger, the second high-temperature heat exchanger, a condenserand an evaporator. An evaporator 8 has a vapor channel connected thesecond expander 2 after that a condenser 7 has a liquid refrigerant pipewhich passes through a pump 4 and connects the evaporator 8, the secondexpander 2 has a vapor channel which passes through the secondhigh-temperature heat exchanger 6 and connects the high-temperature heatexchanger 5, a compressor 3 has a vapor channel connected thehigh-temperature heat exchanger 5, the high-temperature heat exchanger 5has a vapor channel connected an expander 1, the evaporator 8 has alow-pressure vapor channel connected the compressor 3 and the condenser7 respectively after that the expander 2 has a low-pressure vaporchannel connected the evaporator 8. The high-temperature heat exchanger5 and the second high-temperature heat exchanger 6 also have heat sourcemedium channels connected the outside, the condenser 7 has the coolingmedium channel connected the outside, or the evaporator 7 has the heatsource medium channel connected the outside, the expander 1 and thesecond expander 2 connects the compressor and transmit power.

(2) Working processes. The condensate of the condenser 7 flows throughthe pump 4 and enters into the evaporator 8 in which it absorbs heat,vaporizes and superheats, flows through the second expander 2 todepressurize and output work, and flows through the secondhigh-temperature heat exchanger 6 to heat absorption, and then entersthe high-temperature heat exchanger 5 for heat absorption. The vapordischarged from compressor 3 enters the high-temperature heat exchanger5 for heat absorption. The vapor discharged from the high-temperatureheat exchanger 5 flows through the expander 1 to depressurize and outputwork. The low-pressure vapor discharged from the expander 1 flowsthrough the evaporator 8 to release heat and cool down, and then isdivided into two currents. The first current enters the compressor 3 forpressure rise and temperature rise. The second current enters thecondenser 7 to release heat and condense. The heat source mediumsupplies the driving heat load through the high-temperature heatexchanger 5 and the second high-temperature heat exchanger 6. Thecooling medium takes away the low-temperature heat load through thecondenser 7. The expander 1 and the second expander 2 supply power tothe compressor 3 and the outside. Or the expander 1 and the secondexpander 2 supply power to the compressor 3, the pump 4 and the outside.The combined cycle power device is formed.

The combined cycle power device in FIG. 2 works as follows:

(1) Device structure. The combined cycle power device comprises anexpander, the second expander, a compressor, a pump, a high-temperatureheat exchanger, the second high-temperature heat exchanger, a condenserand an evaporator. An evaporator 8 has a vapor channel connected thesecond expander 2 after that a condenser 7 has a liquid refrigerant pipewhich passes through a pump 4 and connects the evaporator 8, the secondexpander 2 has a vapor channel which passes through the secondhigh-temperature 6 heat exchanger and connects the high-temperature heatexchanger 5, a compressor 3 has a vapor channel connected thehigh-temperature heat exchanger 5, the high-temperature heat exchanger 5has a vapor channel connected an expander 1, the expander 1 has alow-pressure vapor channel connected the second high-temperature heatexchanger 6, the evaporator 8 has a low-pressure vapor channel connectedthe compressor 3 and the condenser 7 respectively after that the secondhigh-temperature heat exchanger 6 has a low-pressure vapor channelconnected the evaporator 8. The high-temperature heat exchanger 5 hasthe heat source medium channel connected the outside, the condenser 7has the cooling medium channel connected the outside, the expander 1 andthe second expander 2 connect the compressor 3 and transmit power.

(2) Working processes. The condensate of the condenser 7 flows throughthe pump 4 and enters into the evaporator 8 in which it absorbs heat,vaporizes and superheats, flows through the second expander 2 todepressurize and output work, and flows through the secondhigh-temperature heat exchanger 6 to heat absorption, and then entersthe high-temperature heat exchanger 5 for heat absorption. The vapordischarged from compressor 3 enters the high-temperature heat exchanger5 for heat absorption. The vapor discharged from the high-temperatureheat exchanger 5 flows through the expander 1 to depressurize and outputwork. The low-pressure vapor discharged from the expander 1 flowsthrough the second high-temperature heat exchanger 6 and the evaporator8 to release heat and cool down, and then is divided into two currents.The first current enters the compressor 3 for pressure rise andtemperature rise. The second current enters the condenser 7 to releaseheat and condense. The heat source medium supplies the driving heat loadthrough the high-temperature heat exchanger 5. The cooling medium takesaway the low-temperature heat load through the condenser 7. The expander1 and the second expander 2 supply power to the compressor 3 and theoutside. Or the expander 1 and the second expander 2 supply power to thecompressor 3, the pump 4 and the outside. The combined cycle powerdevice is formed.

The combined cycle power device in FIG. 3 works as follows:

Based on combined cycle power device in FIG. 1, the evaporator 8 addsthe heat source medium channel connected with with the outside. Thecondensate entering the evaporator obtains the heat load provided by thelow-pressure vapor and the heat source medium at the same time, heatsup, vaporizes and superheats, and then enters the second expander 2 fordepressurize and output work. The combined cycle power device is formed.

The combined cycle power device in FIG. 4 works as follows:

(1) Device structure. The combined cycle power device comprises anexpander, the second expander, a compressor, a pump, a high-temperatureheat exchanger, the second high-temperature heat exchanger, a condenser,an evaporator and a heating unit. An evaporator 8 has a vapor channelconnected the second expander 2 after that a condenser 7 has a liquidrefrigerant pipe which passes through a pump 4 and connects theevaporator 8, the second expander 2 has a vapor channel which passesthrough the second high-temperature heat exchanger 6 and connects thehigh-temperature heat exchanger 5, a compressor 3 has a vapor channelconnected the high-temperature heat exchanger 5, the high-temperatureheat exchanger 5 has a vapor channel connected an expander 1, a heatingunit 9 has a low-pressure vapor channel connected the compressor 3 andthe condenser 7 respectively after that the expander 1 has alow-pressure vapor channel connected the heating unit 9. Thehigh-temperature heat exchanger 5 and the second high-temperature heatexchanger 6 also have heat source medium channels connected the outside,the condenser 7 has the cooling medium channel connected the outside,the evaporator 8 has the heat source medium channel connected theoutside, the heating unit 9 has the heated medium channel connected theoutside, the expander 1 and the second expander 2 connect the compressor3 and transmit power.

(2) Working processes. The condensate of the condenser 7 flows throughthe pump 4 and enters into the evaporator 8 in which it absorbs heat,vaporizes and superheats, flows through the second expander 2 todepressurize and output work, and flows through the secondhigh-temperature heat exchanger 6 to heat absorption, and then entersthe high-temperature heat exchanger 5 for heat absorption. The vapordischarged from compressor 3 enters the high-temperature heat exchanger5 for heat absorption. The vapor discharged from the high-temperatureheat exchanger 5 flows through the expander 1 to depressurize and outputwork. The low-pressure vapor discharged from the expander 1 flowsthrough the heating unit 9 to release heat and cool down, and then isdivided into two currents. The first current enters the compressor 3 forpressure rise and temperature rise. The second current enters thecondenser 7 to release heat and condense. The heat source mediumsupplies the driving heat load through the high-temperature heatexchanger 5, the second high-temperature heat exchanger 6 and anevaporator 8. The cooling medium takes away the low-temperature heatload through the condenser 7. The heated medium takes away the mediumtemperature heat load through the heat unit 9. The expander 1 and thesecond expander 2 supply power to the compressor 3 and the outside. Orthe expander 1 and the second expander 2 supply power to the compressor3, the pump 4 and the outside. The combined cycle power device isformed.

The combined cycle power device in FIG. 5 works as follows:

(1) Device structure. The combined cycle power device comprises anexpander, the second expander, a compressor, a pump, a high-temperatureheat exchanger, the second high-temperature heat exchanger, a condenser,an evaporator and a high-temperature regenerator. An evaporator 8 has avapor channel connected the second expander 2 after that a condenser 7has a liquid refrigerant pipe which passes through a pump 4 and connectsthe evaporator 8, the second expander 2 has a vapor channel which passesthrough the second high-temperature 6 heat exchanger and thehigh-temperature regenerator 10 and connect the high-temperature heatexchanger 5, a compressor 3 has a vapor channel which passes through thehigh-temperature regenerator 10 and connects the high-temperature heatexchanger 5, the high-temperature heat exchanger 5 has a vapor channelconnected an expander 1, the expander 1 has a low-pressure vapor channelconnected the high-temperature regenerator 10, the evaporator 8 has alow-pressure vapor channel connected the compressor 3 and the condenser7 respectively after that the high-temperature regenerator 10 has alow-pressure vapor channel connected the evaporator 8. Thehigh-temperature heat exchanger 5 and the second high-temperature heatexchanger 6 also have heat source medium channels connected the outside,the condenser 7 has the cooling medium channel connected the outside,the expander 1 and the second expander 2 connect the compressor 3 andtransmit power.

(2) Working processes. The condensate of the condenser 7 flows throughthe pump 4 and enters into the evaporator 8 in which it absorbs heat,vaporizes and superheats, flows through the second expander 2 todepressurize and output work, and flows through the secondhigh-temperature heat exchanger 6 and the high-temperature regenerator10 to heat absorption, and then enters the high-temperature heatexchanger 5 for heat absorption. The vapor discharged from compressor 3enters the high-temperature regenerator 10 for heat absorption, and thenenters the high-temperature heat exchanger 5 for heat absorption. Thevapor discharged from the high-temperature heat exchanger 5 flowsthrough the expander 1 to depressurize and output work. The low-pressurevapor discharged from the expander 1 flows through the high-temperatureregenerator 10 and the evaporator 8 to release heat and cool down, andthen is divided into two currents. The first current enters thecompressor 3 for pressure rise and temperature rise. The second currententers the condenser 7 to release heat and condense. The heat sourcemedium supplies the driving heat load through the high-temperature heatexchanger 5 and the high-temperature heat exchanger 6. The coolingmedium takes away the low-temperature heat load through the condenser 7.The expander 1 and the second expander 2 supply power to the compressor3 and the outside. Or the expander 1 and the second expander 2 supplypower to the compressor 3, the pump 4 and the outside. The combinedcycle power device is formed.

The combined cycle power device in FIG. 6 works as follows:

(1) Device structure. The combined cycle power device comprises anexpander, the second expander, a compressor, a pump, a high-temperatureheat exchanger, the second high-temperature heat exchanger, a condenser,an evaporator and a high-temperature regenerator. An evaporator 8 has avapor channel connected the second expander 2 after that a condenser 7has a liquid refrigerant pipe which passes through a pump 4 and connectsthe evaporator 8, the second expander 2 has a vapor channel which passesthrough the second high-temperature heat exchanger 6 and thehigh-temperature regenerator 10 connect the high-temperature heatexchanger 5, a compressor 3 has a vapor channel which passes through thehigh-temperature regenerator 10 and connects the high-temperature heatexchanger 5, the high-temperature heat exchanger 5 has a vapor channelconnected an expander 1, the expander 1 has a low-pressure vapor channelwhich passes through the high-temperature regenerator 10 connects thesecond high-temperature heat exchanger 6, the evaporator 8 has alow-pressure vapor channel connected the compressor 3 and the condenser7 respectively after that the second high-temperature 6 heat exchangerhas a low-pressure vapor channel connected the evaporator 8. Thehigh-temperature heat exchanger 5 has the heat source medium channelsconnected the outside, the condenser 7 has the cooling medium channelconnected the outside, the expander 1 and the second expander 2 connectthe compressor 3 and transmit power.

(2) Working processes. The condensate of the condenser 7 flows throughthe pump 4 and enters into the evaporator 8 in which it absorbs heat,vaporizes and superheats, flows through the second expander 2 todepressurize and output work, and flows through the secondhigh-temperature heat exchanger 6 and the high-temperature regenerator10 to heat absorption, and then enters the high-temperature heatexchanger 5 for heat absorption. The vapor discharged from compressor 3enters the high-temperature regenerator 10 for heat absorption, and thenenters the high-temperature heat exchanger 5 for heat absorption. Thevapor discharged from the high-temperature heat exchanger 5 flowsthrough the expander 1 to depressurize and output work. The low-pressurevapor discharged from the expander 1 flows through the high-temperatureregenerator 10, the second high-temperature heat exchanger 6 and theevaporator 8 to release heat and cool down, and then is divided into twocurrents. The first current enters the compressor 3 for pressure riseand temperature rise. The second current enters the condenser 7 torelease heat and condense. The heat source medium supplies the drivingheat load through the high-temperature heat exchanger 5. The coolingmedium takes away the low-temperature heat load through the condenser 7.The expander 1 and the second expander 2 supply power to the compressor3 and the outside. Or the expander 1 and the second expander 2 supplypower to the compressor 3, the pump 4 and the outside. The combinedcycle power device is formed.

The combined cycle power device in FIG. 7 works as follows:

(1) Device structure. The combined cycle power device comprises anexpander, the second expander, a compressor, a pump, a high-temperatureheat exchanger, the second high-temperature heat exchanger, a condenser,and an evaporator. An evaporator 8 has a vapor channel connected withthe second expander 2 after that a condenser 7 has a liquid refrigerantpipe which passes through a pump 4 and connects the evaporator 8, thesecond expander 2 has a vapor channel which passes through the secondhigh-temperature heat exchanger 6 and connects the expander 1, acompressor 3 has a vapor channel connects the high-temperature heatexchanger 5, the high-temperature heat exchanger 5 has a vapor channelwhich passes through a intermediate vapor inlet channel and connects theexpander 1, the evaporator 8 has a low-pressure vapor channel connectedwith the compressor 3 and the condenser 7 respectively after that theexpander 1 has a low-pressure vapor channel connected with theevaporator 8. The high-temperature heat exchanger 5 and the secondhigh-temperature heat exchanger 6 also have heat source medium channelsconnected the outside, the condenser 7 has the cooling medium channelconnected with the outside, the expander 1 and the second expander 2connect the compressor 3 and transmit power.

(2) Working processes. The condensate of the condenser 7 flows throughthe pump 4 and enters into the evaporator 8 in which it absorbs heat,vaporizes and superheats, flows through the second expander 2 todepressurize and output work, and flows through the secondhigh-temperature heat exchanger 6 to heat absorption, and then entersthe expander 1 for heat absorption. The vapor discharged from compressor3 enters the high-temperature heat exchanger 5 for heat absorption, andthen enters the expander 1 through the middle steam inlet channel todepressurize and output work. The low-pressure vapor discharged from theexpander 1 flows through the evaporator 8 to release heat and cool down,and then is divided into two currents. The first current enters thecompressor 3 for pressure rise and temperature rise. The second currententers the condenser 7 to release heat and condense. The heat sourcemedium supplies the driving heat load through the high-temperature heatexchanger 5 and second the high-temperature heat exchanger 6. Thecooling medium takes away the low-temperature heat load through thecondenser 7. The expander 1 and the second expander 2 supply power tothe compressor 3 and the outside. Or the expander 1 and the secondexpander 2 supply power to the compressor 3, the pump 4 and the outside.The combined cycle power device is formed.

The combined cycle power device in FIG. 8 works as follows:

(1) Device structure. The combined cycle power device comprises anexpander, the second expander, a compressor, a pump, a high-temperatureheat exchanger, the second high-temperature heat exchanger, a condenserand an evaporator. An evaporator 8 has a vapor channel connected thesecond expander 2 after that a condenser 7 has a liquid refrigerant pipewhich passes through a pump 4 and connects the evaporator 8, the secondexpander 2 has a vapor channel connected the second high-temperatureheat exchanger 6, the high-temperature heat exchanger 6 has a vaporchannel which passes through a intermediate vapor inlet channel andconnects the expander 1, a compressor 3 has a vapor channel which passesthrough the high-temperature heat exchanger 5 and connects the expander1, the evaporator 8 has a low-pressure vapor channel connected thecompressor 3 and the condenser 7 respectively after that the expander 1has a low-pressure vapor channel connected the evaporator 8. Thehigh-temperature heat exchanger 5 and the second high-temperature heatexchanger 6 also have heat source medium channels connected the outside,the condenser 7 has the cooling medium channel connected the outside,the expander 1 and the second expander 2 connect the compressor 3 andtransmit power.

(2) Working processes. The condensate of the condenser 7 flows throughthe pump 4 and enters into the evaporator 8 in which it absorbs heat,vaporizes and superheats, flows through the second expander 2 todepressurize and output work, and flows through the secondhigh-temperature heat exchanger 6 to heat absorption, and then entersthe expander 1 for heat absorption. The vapor discharged from compressor3 enters the high-temperature heat exchanger 5 for heat absorption, andthen enters the expander 1 through the middle steam inlet channel todepressurize and output work. The low-pressure vapor discharged from theexpander 1 flows through the evaporator 8 to release heat and cool down,and then is divided into two currents. The first current enters thecompressor 3 for pressure rise and temperature rise. The second currententers the condenser 7 to release heat and condense. The heat sourcemedium supplies the driving heat load through the high-temperature heatexchanger 5 and second the high-temperature heat exchanger 6. Thecooling medium takes away the low-temperature heat load through thecondenser 7. The expander 1 and the second expander 2 supply power tothe compressor 3 and the outside. Or the expander 1 and the secondexpander 2 supply power to the compressor 3, the pump 4 and the outside.The combined cycle power device is formed.

The combined cycle power device in FIG. 9 works as follows:

(1) Device structure. The combined cycle power device comprises anexpander, the second expander, a compressor, a pump, a high-temperatureheat exchanger, the second high-temperature heat exchanger, a condenser,an evaporator and a high-temperature regenerator. An evaporator 8 has avapor channel connected the second expander 2 after that a condenser 7has a liquid refrigerant pipe which passes through a pump 4 and connectsthe evaporator 8, the second expander 2 has a vapor channel connectedthe second high-temperature heat exchanger 6, the secondhigh-temperature heat exchanger 6 has a vapor channel which passesthrough a intermediate vapor inlet channel and connects the expander 1,a compressor 3 has a vapor channel which passes through thehigh-temperature regenerator 10 and the high-temperature heat exchanger5 and connects the expander 1, the expander 1 has a low-pressure vaporchannel connected the high-temperature regenerator 10, the evaporator 8has a low-pressure vapor channel connected the compressor 3 and thecondenser 7 respectively after that the high-temperature regenerator 10has a low-pressure vapor channel connected the evaporator 8. Thehigh-temperature heat exchanger 5 and the second high-temperature heatexchanger 6 also have heat source medium channels connected the outside,the condenser 7 has the cooling medium channel connected the outside,the expander 1 and the second expander 2 connect the compressor 3 andtransmit power.

(2) Working processes. The condensate of the condenser 7 flows throughthe pump 4 and enters into the evaporator 8 in which it absorbs heat,vaporizes and superheats, flows through the second expander 2 todepressurize and output work, and flows through the secondhigh-temperature heat exchanger 6, and then enters the expander 1 forheat absorption. The vapor discharged from compressor 3 enters thehigh-temperature regenerator 10 for heat absorption, and then enters thehigh-temperature heat exchanger 5 for heat absorption, and then entersthe expander 1 for heat absorption. The low-pressure vapor dischargedfrom the expander 1 flows through the high-temperature regenerator 10and the evaporator 8 to release heat and cool down, and then is dividedinto two currents. The first current enters the compressor 3 forpressure rise and temperature rise. The second current enters thecondenser 7 to release heat and condense. The heat source mediumsupplies the driving heat load through the high-temperature heatexchanger 5 and the high-temperature heat exchanger 6. The coolingmedium takes away the low-temperature heat load through the condenser 7.The expander 1 and the second expander 2 supply power to the compressor3 and the outside. Or the expander 1 and the second expander 2 supplypower to the compressor 3, the pump 4 and the outside. The combinedcycle power device is formed.

The combined cycle power device in FIG. 10 works as follows:

(1) Device structure. The combined cycle power device comprises anexpander, the second expander, a compressor, a pump, a high-temperatureheat exchanger, the second high-temperature heat exchanger, a condenser,an evaporator and the third expander. An evaporator 8 has a vaporchannel connected the second expander 2 after that a condenser 7 has aliquid refrigerant pipe which passes through a pump 4 and connects theevaporator 8, the second expander 2 has a vapor channel which passesthrough the second high-temperature heat exchanger 6 and connects thethird expander 11, the third expander 11 has a low-pressure vaporchannel connected the evaporator 8, a compressor 3 has a vapor channelwhich passes through the high-temperature heat exchanger 5 and connectsthe expander 1, the expander 1 has a low-pressure vapor channelconnected the evaporator 8, the evaporator 8 has a low-pressure vaporchannel connected the compressor 3 and the condenser 7 respectively, Thehigh-temperature heat exchanger 5 and the second high-temperature heatexchanger 6 also have heat source medium channels connected the outside,the condenser 7 has the cooling medium channel connected the outside, orthe evaporator 8 has the heat source medium channel connected theoutside, the expander 1, the second expander 2 and the third expander 11connect the compressor and transmit power.

(2) Working processes. The condensate of the condenser 7 flows throughthe pump 4 and enters into the evaporator 8 in which it absorbs heat,vaporizes and superheats, flows through the second expander 2 todepressurize and output work, and flows through the secondhigh-temperature heat exchanger 6 to heat absorption, and then entersthe third expander 11 for heat absorption. The low-pressure vapordischarged from the third expander 11 enters the evaporator 8 to releaseheat and cool down. The vapor discharged from compressor 3 enters thehigh-temperature heat exchanger 5 for heat absorption, and then entersthe expander 1 through the middle steam inlet channel to depressurizeand output work. The low-pressure vapor discharged from the expander 1flows through the evaporator 8 to release heat and cool down. Thelow-pressure vapor discharged from the evaporator 8 is divided into twocurrents, the first current enters the compressor 3 for pressure riseand temperature rise. The second current enters the condenser 7 torelease heat and condense. The heat source medium supplies the drivingheat load through the high-temperature heat exchanger 5, second thehigh-temperature heat exchanger 6 and the evaporator 8. The coolingmedium takes away the low-temperature heat load through the condenser 7.The expander 1, the second expander 2 and the third expander 11 supplypower to the compressor 3 and the outside. Or the expander 1, the secondexpander 2 and the third expander 11 supply power to the compressor 3,the pump 4 and the outside. The combined cycle power device is formed.

The combined cycle power device in FIG. 11 works as follows:

(1) Device structure. The combined cycle power device comprises anexpander, the second expander, a compressor, a pump, a high-temperatureheat exchanger, the second high-temperature heat exchanger, a condenser,an evaporator and a heating unit. An evaporator 8 has a vapor channelconnected the second expander 2 after that a condenser 7 has a liquidrefrigerant pipe which passes through a pump 4 and connects theevaporator 8, the second expander 2 has a vapor channel which passesthrough the second high-temperature heat exchanger 6 and connects thehigh-temperature heat exchanger 5, a compressor 3 has a vapor channelconnected the high-temperature heat exchanger 5, the high-temperatureheat exchanger 5 has a vapor channel connected an expander 1, Anevaporator 8 has a low-pressure vapor channel connected the heating unit9 after that the expander 1 has a low-pressure vapor channel connectedthe evaporator 8, a heating unit 9 has a low-pressure vapor channelconnected the compressor 3 and the condenser 7 respectively. Thehigh-temperature heat exchanger 5 and the second high-temperature heatexchanger 6 also have heat source medium channels connected the outside,the condenser 7 has the cooling medium channel connected the outside,the heating unit 9 has the heated medium channel connected the outside,the expander 1 and the second expander 2 connect the compressor 3 andtransmit power.

(2) Working processes. The condensate of the condenser 7 flows throughthe pump 4 and enters into the evaporator 8 in which it absorbs heat,vaporizes and superheats, flows through the second expander 2 todepressurize and output work, and flows through the secondhigh-temperature heat exchanger 6 to heat absorption, and then entersthe high-temperature heat exchanger 5 for heat absorption. The vapordischarged from compressor 3 enters the high-temperature heat exchanger5 for heat absorption. The vapor discharged from the high-temperatureheat exchanger 5 flows through the expander 1 to depressurize and outputwork. The low-pressure vapor discharged from the expander 1 flowsthrough the evaporator 8 and the heating unit 9 to release heat and cooldown, and then is divided into two currents. The first current entersthe compressor 3 for pressure rise and temperature rise. The secondcurrent enters the condenser 7 to release heat and condense. The heatsource medium supplies the driving heat load through thehigh-temperature heat exchanger 5, the second high-temperature heatexchanger 6. The cooling medium takes away the low-temperature heat loadthrough the condenser 7. The heated medium takes away the mediumtemperature heat load through the heat unit 9. The expander 1 and thesecond expander 2 supply power to the compressor 3 and the outside. Orthe expander 1 and the second expander 2 supply power to the compressor3, the pump 4 and the outside. The combined cycle power device isformed.

The combined cycle power device in FIG. 12 works as follows:

(1) Device structure. The combined cycle power device comprises anexpander, the second expander, a compressor, a pump, a high-temperatureheat exchanger, the second high-temperature heat exchanger, a condenser,an evaporator, the second compressor and the third high-temperature heatexchanger. An evaporator 8 has a vapor channel connected the secondexpander 2 after that a condenser 7 has a liquid refrigerant pipe whichpasses through a pump 4 and connects the evaporator 8, the secondexpander 2 has a vapor channel which passes through the secondhigh-temperature heat exchanger 6 and connects the high-temperature heatexchanger 5, a compressor 3 has a vapor channel connected thehigh-temperature heat exchanger 5, the high-temperature heat exchanger 5has a vapor channel connected the second compressor 12, the secondcompressor 12 has a vapor channel which passes through the thirdhigh-temperature heat exchanger 13 connects an expander 1, theevaporator 8 has a low-pressure vapor channel connected the compressor 3and the condenser 7 respectively after that the expander 1 has alow-pressure vapor channel connected the evaporator 8. Thehigh-temperature heat exchanger 5, the second high-temperature 6 and thethird high-temperature heat exchanger 13 also have heat source mediumchannels connected the outside, the condenser 7 has the cooling mediumchannel connected the outside, the expander 1 and the second expander 2connect the compressor 3 and the second compressor 12 and transmitpower.

(2) Working processes. The condensate of the condenser 7 flows throughthe pump 4 and enters into the evaporator 8 in which it absorbs heat,vaporizes and superheats, flows through the second expander 2 todepressurize and output work, and flows through the secondhigh-temperature heat exchanger 6 to heat absorption, and then entersthe high-temperature heat exchanger 5 for heat absorption. The vapordischarged from compressor 3 enters the high-temperature heat exchanger5 for heat absorption. The vapor discharged from the high-temperatureheat exchanger 5 flows through the second compressor 12 to pressure riseand temperature rise, flows through the third high-temperature heatexchanger 13 to heat absorption, flows through the expander 1 todepressurize and output work. The low-pressure vapor discharged from theexpander 1 flows through the evaporator 8 to release heat and cool down,and then is divided into two currents. The first current enters thecompressor 3 for pressure rise and temperature rise. The second currententers the condenser 7 to release heat and condense. The heat sourcemedium supplies the driving heat load through the high-temperature heatexchanger 5 and second the high-temperature heat exchanger 6 and thethird high-temperature heat exchanger 13. The cooling medium takes awaythe low-temperature heat load through the condenser 7. The expander 1and the second expander 2 supply power to the compressor 3 and thesecond compressor 12 the outside. Or the expander 1 and the secondexpander 2 supply power to the compressor 3, the pump 4, the secondcompressor 12 and the outside. The combined cycle power device isformed.

The combined cycle power device in FIG. 13 works as follows:

(1) Device structure. The combined cycle power device comprises anexpander, the second expander, a compressor, a pump, a high-temperatureheat exchanger, the second high-temperature heat exchanger, a condenser,an evaporator, the third expander and the third high-temperature heatexchanger. An evaporator 8 has a vapor channel connected the secondexpander 2 after that a condenser 7 has a liquid refrigerant pipe whichpasses through a pump 4 and connects the evaporator 8, the secondexpander 2 has a vapor channel which passes through the secondhigh-temperature heat exchanger 6 and connects the high-temperature heatexchanger 5, a compressor 3 has a vapor channel connected thehigh-temperature heat exchanger 5, the high-temperature heat exchanger 5has a vapor channel connected the third expander 11, the third expander11 has a vapor channel which passes through the third high-temperatureheat exchanger 13 connects an expander 1, the evaporator 8 has alow-pressure vapor channel connected the compressor 3 and the condenser7 respectively after that the expander 1 has a low-pressure vaporchannel connected the evaporator 8. The high-temperature heat exchanger5, the second high-temperature 6 and the third high-temperature heatexchanger 13 also have heat source medium channels connected theoutside, the condenser 7 has the cooling medium channel connected theoutside, the expander 1, the second expander 2 and the third expander 11connect the compressor 3 and transmit power.

(2) Working processes. The condensate of the condenser 7 flows throughthe pump 4 and enters into the evaporator 8 in which it absorbs heat,vaporizes and superheats, flows through the second expander 2 todepressurize and output work, and flows through the secondhigh-temperature heat exchanger 6 to heat absorption, and then entersthe high-temperature heat exchanger 5 for heat absorption. The vapordischarged from compressor 3 enters the high-temperature heat exchanger5 for heat absorption. The vapor discharged from high-temperature heatexchanger 5 flows through the third expander 11 to depressurize andoutput work, and flows through the third high-temperature heat exchanger13 to heat absorption, flows through the expander 1 to depressurize andoutput work. The low-pressure vapor discharged from the expander 1 flowsthrough the evaporator 8 to release heat and cool down. The low-pressurevapor discharged from the evaporator 8 is divided into two currents, thefirst current enters the compressor 3 for pressure rise and temperaturerise. The second current enters the condenser 7 to release heat andcondense. The heat source medium supplies the driving heat load throughthe high-temperature heat exchanger 5, second the high-temperature heatexchanger 6 and the third high-temperature heat exchanger 13. Thecooling medium takes away the low-temperature heat load through thecondenser 7. The expander 1, the second expander 2 and the thirdexpander 11 supply power to the compressor 3 and the outside. Or theexpander 1, the second expander 2 and the third expander 11 supply powerto the compressor 3, the pump 4 and the outside. The combined cyclepower device is formed.

The combined cycle power device in FIG. 14 works as follows:

(1) Device structure. The combined cycle power device comprises anexpander, the second expander, a compressor, a pump, a high-temperatureheat exchanger, the second high-temperature heat exchanger, a condenser,an evaporator, a high-temperature regenerator, the second compressor andthe third high-temperature heat exchanger. An evaporator 8 has a vaporchannel connected the second expander 2 after that a condenser 7 has aliquid refrigerant pipe which passes through 4 a pump and connects theevaporator 8, the second expander 2 has a vapor channel which passesthrough the second high-temperature heat exchanger 6, thehigh-temperature regenerator 10 and connects the high-temperature heatexchanger 5, a compressor 3 has a vapor channel which passes through thehigh-temperature regenerator 10 and connects the high-temperature heatexchanger 5, the high-temperature heat exchanger 5 has a vapor channelconnected the second compressor 12, the second compressor 12 has a vaporchannel which passes through the third high-temperature heat exchanger13 connects an expander 1, the expander 1 has a low-pressure vaporchannel connected the high-temperature regenerator 10, the evaporator 8has a low-pressure vapor channel connected the compressor 3 and thecondenser 7 respectively after that the high-temperature regenerator 10has a low-pressure vapor channel connected the evaporator 8. Thehigh-temperature heat exchanger 5, the second high-temperature 6 and thethird high-temperature heat exchanger 13 also have heat source mediumchannels connected the outside, the condenser 7 has the cooling mediumchannel connected the outside, the expander 1 and the second expander 2connect the compressor 3 and the second compressor 12 and transmitpower.

(2) Working processes. The condensate of the condenser 7 flows throughthe pump 4 and enters into the evaporator 8 in which it absorbs heat,vaporizes and superheats, flows through the second expander 2 todepressurize and output work, and flows through the secondhigh-temperature heat exchanger 6 to heat absorption, and then entersthe high-temperature heat exchanger 5 for heat absorption. The vapordischarged from compressor 3 enters the high-temperature heat exchanger5 for heat absorption. The vapor discharged from the high-temperatureheat exchanger 5 flows through the second compressor 12 to pressure riseand temperature rise, flows through the third high-temperature heatexchanger 13 to heat absorption, flows through the expander 1 todepressurize and output work. The low-pressure vapor discharged from theexpander 1 flows through the evaporator 8 to release heat and cool down,and then is divided into two currents. The first current enters thecompressor 3 for pressure rise and temperature rise. The second currententers the condenser 7 to release heat and condense. The heat sourcemedium supplies the driving heat load through the high-temperature heatexchanger 5 and second the high-temperature heat exchanger 6 and thethird high-temperature heat exchanger 13. The cooling medium takes awaythe low-temperature heat load through the condenser 7. The expander 1and the second expander 2 supply power to the compressor 3 and thesecond compressor 12 and the outside. Or the expander 1 and the secondexpander 2 supply power to the compressor 3, the pump 4, the secondcompressor 12 and the outside. The combined cycle power device isformed.

The combined cycle power device in FIG. 15 works as follows:

(1) Device structure. The combined cycle power device comprises anexpander, the second expander, a compressor, a pump, a high-temperatureheat exchanger, the second high-temperature heat exchanger, a condenser,an evaporator, a high-temperature regenerator, the third expander andthe third high-temperature heat exchanger. An evaporator 8 has a vaporchannel connected the second expander 2 after that a condenser 7 has aliquid refrigerant pipe which passes through a pump 4 and connects theevaporator 8, the second expander 2 has a vapor channel which passesthrough the second high-temperature heat exchanger 6 and ahigh-temperature regenerator 10 and connects the high-temperature heatexchanger 5, a compressor 3 has a vapor channel which passes through thehigh-temperature regenerator 10 and connects the high-temperature heatexchanger 5, the high-temperature heat exchanger 5 has a vapor channelconnected the third expander 11, the third expander 11 has a vaporchannel which passes through the third high-temperature heat exchanger13 connects an expander 1, an expander 1 has a low-pressure vaporchannel connected the high-temperature regenerator 10, the evaporator 8has a low-pressure vapor channel connected the compressor 3 and thecondenser 7 respectively after that the high-temperature regenerator 10has a low-pressure vapor channel connected the evaporator 8. Thehigh-temperature heat exchanger 5, the second high-temperature 6 and thethird high-temperature heat exchanger 13 also have heat source mediumchannels connected the outside, the condenser 7 has the cooling mediumchannel connected the outside, the expander 1, the second expander 2 andthe third expander 11 connect the compressor 3 and transmit power.

(2) Working processes. The condensate of the condenser 7 flows throughthe pump 4 and enters into the evaporator 8 in which it absorbs heat,vaporizes and superheats, flows through the second expander 2 todepressurize and output work, and flows through the secondhigh-temperature heat exchanger 6 and the high-temperature regenerator10 to heat absorption, and then enters the high-temperature heatexchanger 5 for heat absorption. The vapor discharged from compressor 3enters the high-temperature regenerator 10 for heat absorption, and thenenters the high-temperature heat exchanger 5 for heat absorption. Thevapor discharged from the high-temperature heat exchanger 5 flowsthrough the third expander 11 to pressure rise and temperature rise,flows through the third high-temperature heat exchanger 13 to heatabsorption, flows through the expander 1 to depressurize and outputwork. The low-pressure vapor discharged from the expander 1 flowsthrough the high-temperature regenerator 10 and the evaporator 8 torelease heat and cool down, and then is divided into two currents. Thefirst current enters the compressor 3 for pressure rise and temperaturerise. The second current enters the condenser 7 to release heat andcondense. The heat source medium supplies the driving heat load throughthe high-temperature heat exchanger 5 and second the high-temperatureheat exchanger 6 and the third high-temperature heat exchanger 13. Thecooling medium takes away the low-temperature heat load through thecondenser 7. The expander 1, the second expander 2 and the thirdexpander 11 supply power to the compressor 3 and the outside. Or theexpander 1, the second expander 2 and the third expander 11 supply powerto the compressor 3, the pump 4 and the outside. The combined cyclepower device is formed.

The combined cycle power device in FIG. 16 works as follows:

(1) Structurally, based on combined cycle power device in FIG. 1, a lowtemperature regenerator and the second pump is added. That a condenser 7has a liquid refrigerant pipe which passes through a pump 4 and connectsthe evaporator 8 is adjusted for that a condenser 7 has a liquidrefrigerant pipe which passes through a pump 4 and connects a lowtemperature regenerator 14. The compressor 3 adds a vapor extractionchannel connected the low temperature regenerator 14. The lowtemperature regenerator 14 has a liquid refrigerant pipe which passesthrough the second pump 15 and connects the evaporator 8.

(2) Working processes. The condensate of the condenser 7 flows throughthe pump 4 and enters into the low temperature regenerator 14, mixedwith the extraction vapor discharged from compressor 3 to heatabsorption, after the extraction steam and the condensate are mixed,they release heat and condense. The condensate of the low temperatureregenerator 14 flows through the pump 4 and enters into the evaporator 8in which it absorbs heat, vaporizes and superheats, flows through thesecond expander 2 to depressurize and output work, and flows through thesecond high-temperature heat exchanger 6 to heat absorption, and thenenters the high-temperature heat exchanger 5 for heat absorption. Thevapor discharged from compressor 3 enters the high-temperature heatexchanger 5 for heat absorption. The vapor discharged from thehigh-temperature heat exchanger 5 flows through the expander 1 todepressurize and output work. The low-pressure vapor discharged from theexpander 1 flows through the evaporator 8 to release heat and cool down,and then is divided into two currents. The first current enters thecompressor 3, the second current enters the condenser 7 to release heatand condense. The low-pressure vapor discharged from the compressor 3 isincreased to pressure rise and temperature rise and then divided intotwo currents. The first current enters the low temperature regenerator14 through the middle vapor channel, the second current continues topressure rise and temperature rise. The heat source medium supplies thedriving heat load through the high-temperature heat exchanger 5 andsecond the high-temperature heat exchanger 6. The cooling medium takesaway the low-temperature heat load through the condenser 7. The expander1 and the second expander 2 supply power to the compressor 3 and theoutside. Or the expander 1 and the second expander 2 supply power to thecompressor 3, the pump 4, the second pump 15 and the outside. Thecombined cycle power device is formed.

The combined cycle power device in FIG. 17 works as follows:

(1) Structurally, based on combined cycle power device in FIG. 4, a lowtemperature regenerator and the second pump is added. That a condenser 7has a liquid refrigerant pipe which passes through a pump 4 and connectsthe evaporator 8 is adjusted for that a condenser 7 has a liquidrefrigerant pipe which passes through a pump 4 and connects a lowtemperature regenerator 14. The compressor 3 adds a vapor extractionchannel connected the low temperature regenerator 14. The lowtemperature regenerator 14 has a liquid refrigerant pipe which passesthrough the second pump 15 and connects the evaporator 8.

(2) Working processes. The condensate of the condenser 7 flows throughthe pump 4 and enters into the low temperature regenerator 14, mixedwith the extraction vapor discharged from compressor 3 to heatabsorption, after the extraction steam and the condensate are mixed,they release heat and condense. The condensate of the low temperatureregenerator 14 flows through the second pump 15 and enters into theevaporator 8 in which it absorbs heat, vaporizes and superheats, flowsthrough the second expander 2 to depressurize and output work, and flowsthrough the second high-temperature heat exchanger 6 to heat absorption,and then enters the high-temperature heat exchanger 5 for heatabsorption. The vapor discharged from compressor 3 enters thehigh-temperature heat exchanger 5 for heat absorption. The vapordischarged from the high-temperature heat exchanger 5 flows through theexpander 1 to depressurize and output work. The low-pressure vapordischarged from the expander 1 flows through the heat unit 9 to releaseheat and cool down, and then is divided into two currents. The firstcurrent enters the compressor 3, the second current enters the condenser7 to release heat and condense. The low-pressure vapor discharged fromthe compressor 3 is increased to pressure rise and temperature rise andthen divided into two currents. The first current enters the lowtemperature regenerator 14 through the middle vapor channel, the secondcurrent continues to pressure rise and temperature rise. The heat sourcemedium supplies the driving heat load through the high-temperature heatexchanger 5, second the high-temperature heat exchanger 6 and theevaporator 8. The cooling medium takes away the low-temperature heatload through the condenser 7. The heated medium takes away the mediumtemperature heat load through the heat unit 9. The expander 1 and thesecond expander 2 supply power to the compressor 3 and the outside. Orthe expander 1 and the second expander 2 supply power to the compressor3, the pump 4, the second pump 15 and the outside. The combined cyclepower device is formed.

The technical effects of the present invention: the combined cycle powerdevice proposed by the present invention has the following effects andadvantages:

(1) The circulating working medium absorbs heat at high-temperature heatunder low pressure. The temperature difference loss between thecirculating working medium and the high-temperature heat source issmall, which is conducive to improving the thermal efficiency of thesystem and the safety of the device.

(2) The circulating working medium mainly relies on the condensationphase transformation process to realize low temperature heat release.The temperature difference loss between the circulating working mediumand the environment is controllable, which is conducive to improving thethermal efficiency.

(3) The present invention adopts the low-pressure and high-temperatureoperation mode to work in the high-temperature region. Therefore, thecontradiction among thermal efficiency, the working medium's parametersand the material's temperature resistance and pressure resistanceabilities, which is common in traditional vapor power devices, can beresolved. The temperature difference loss between the heat source andthe circulating medium can be greatly reduced, and the thermalefficiency can be greatly improved.

(4) In the present invention, the equipment is shared to increase theheat absorption process of the lower cycle (Rankine cycle) and improvethe thermal efficiency.

(5) The present invention only uses a single working medium, whichreduce the operation cost and improve the flexibility of thermal device.

(6) When the high-temperature expander is shared, the number of coreequipment is reduced, which is conducive to reducing system investmentand improving thermal efficiency.

(7) The lower cycle adopts double expansion and double heat absorptionprocess, which is conducive to flexible adjustment of working parametersand adaptability.

(8) The present invention effectively deals with the high-temperatureheat source and the variable temperature heat source, the high-qualityfuel and the non high-quality fuel, and has a wide range of application.

(9) On the premise of realizing high thermal efficiency, the device inthe present invention can be selected to operate at low pressure, so asto greatly improve the operation safety of the device.

(10) The present invention can realize the heat recovery of enterprisedevice simply, actively, safely and efficiently.

(11) The thermal efficiency improves effectively when the presentinvention is applied to the lower end of the gas-steam combined cycle.

(12) When the present invention is applied to the coal-fired thermalsystem, it can maintain the original advantages of the traditional steampower cycle in which water vapor is used as working medium and has awide range of working parameters. According to the actual situation, thepresent invention can work in subcritical, critical, supercritical orultra supercritical state, etc.

What is claimed is:
 1. A combined cycle power device comprising anexpander, the second expander, a compressor, a pump, a high-temperatureheat exchanger, the second high-temperature heat exchanger, a condenserand an evaporator, wherein an evaporator (8) has a vapor channelconnected the second expander (2) after that a condenser (7) has aliquid refrigerant pipe which passes through a pump (4) and connects theevaporator (8), the second expander (2) has a vapor channel which passesthrough the second high-temperature heat exchanger (6) and connects thehigh-temperature heat exchanger (5), a compressor (3) has a vaporchannel connected the high-temperature heat exchanger (5), thehigh-temperature heat exchanger (5) has a vapor channel connected anexpander (1), the evaporator (8) has a low-pressure vapor channelconnected the compressor (3) and the condenser (7) respectively afterthat the expander (1) has a low-pressure vapor channel connected theevaporator (8), wherein the high-temperature heat exchanger (5) and thesecond high-temperature heat exchanger (6) also have heat source mediumchannels connected the outside, the condenser (7) has the cooling mediumchannel connected the outside, or the evaporator (8) has the heat sourcemedium channel connected the outside, the expander (1) and the secondexpander (2) connect the compressor (3) and transmit power, wherein orthe expander (1) and the second expander (2) connect the compressor (3)and the pump (4) and transmit power.
 2. A combined cycle power devicecomprising an expander, the second expander, a compressor, a pump, ahigh-temperature heat exchanger, the second high-temperature heatexchanger, a condenser and an evaporator, wherein an evaporator (8) hasa vapor channel connected the second expander (2) after that a condenser(7) has a liquid refrigerant pipe which passes through a pump (4) andconnects the evaporator (8), the second expander (2) has a vapor channelwhich passes through the second high-temperature heat exchanger (6) andconnects the high-temperature heat exchanger (5), a compressor (3) has avapor channel connected the high-temperature heat exchanger (5), thehigh-temperature heat exchanger (5) has a vapor channel connected anexpander (1), the expander (1) has a low-pressure vapor channelconnected the second high-temperature heat exchanger (6), the evaporator(8) has a low-pressure vapor channel connected the compressor (3) andthe condenser (7) respectively after that the second high-temperatureheat exchanger (6) has a low-pressure vapor channel connected theevaporator (8), wherein the high-temperature heat exchanger (5) has theheat source medium channel connected the outside, the secondhigh-temperature heat exchanger (6) may also has the heat source mediumchannel connected the outside, the condenser (7) has the cooling mediumchannel connected the outside, or the evaporator (8) has the heat sourcemedium channel connected the outside, the expander (1) and the secondexpander (2) connect the compressor (3) and transmit power, wherein orthe expander (1) and the second expander (2) connect the compressor (3)and the pump (4) and transmit power.
 3. A combined cycle power devicecomprising an expander, the second expander, a compressor, a pump, ahigh-temperature heat exchanger, the second high-temperature heatexchanger, a condenser, an evaporator and a heating unit, wherein anevaporator (8) has a vapor channel connected the second expander (2)after that a condenser (7) has a liquid refrigerant pipe which passesthrough a pump (4) and connects the evaporator (8), the second expander(2) has a vapor channel which passes through the second high-temperatureheat exchanger (6) and connects the high-temperature heat exchanger (5),a compressor (3) has a vapor channel connected the high-temperature heatexchanger (5), the high-temperature heat exchanger (5) has a vaporchannel connected an expander (1), a heating unit (9) has a low-pressurevapor channel connected the compressor (3) and the condenser (7)respectively after that the expander (1) has a low-pressure vaporchannel connected the heating unit (9), wherein the high-temperatureheat exchanger (5) and the second high-temperature heat exchanger (6)also have heat source medium channels connected the outside, thecondenser (7) has the cooling medium channel connected the outside, theevaporator (8) has the heat source medium channel connected the outside,the heating unit (9) has the heated medium channel connected theoutside, the expander (1) and the second expander (2) connect thecompressor (3) and transmit power, wherein or the expander (1) and thesecond expander (2) connect the compressor (3) and the pump (4) andtransmit power.
 4. A combined cycle power device comprising an expander,the second expander, a compressor, a pump, a high-temperature heatexchanger, the second high-temperature heat exchanger, a condenser, anevaporator and a high-temperature regenerator, wherein an evaporator (8)has a vapor channel connected the second expander (2) after that acondenser (7) has a liquid refrigerant pipe which passes through a pump(4) and connects the evaporator (8), the second expander (2) has a vaporchannel which passes through the second high-temperature heat exchanger(6) and the high-temperature regenerator (10) and connects thehigh-temperature heat exchanger (5), a compressor (3) has a vaporchannel which passes through the high-temperature regenerator (10) andconnects the high-temperature heat exchanger (5), the high-temperatureheat exchanger (5) has a vapor channel connected an expander (1), theexpander (1) has a low-pressure vapor channel connected thehigh-temperature regenerator (10), the evaporator (8) has a low-pressurevapor channel connected the compressor (3) and the condenser (7)respectively after that the high-temperature regenerator (10) has alow-pressure vapor channel connected the evaporator (8), wherein thehigh-temperature heat exchanger (5) and the second high-temperature heatexchanger (6) also have heat source medium channels connected theoutside, the condenser (7) has the cooling medium channel connected theoutside, or the evaporator (8) has the heat source medium channelconnected the outside, the expander (1) and the second expander (2)connect the compressor (3) and transmit power, wherein or the expander(1) and the second expander (2) connect the compressor (3) and the pump(4) and transmit power.
 5. A combined cycle power device comprising anexpander, the second expander, a compressor, a pump a high-temperatureheat exchanger, the second high-temperature heat exchanger, a condenser,an evaporator and a high-temperature regenerator, wherein an evaporator(8) has a vapor channel connected the second expander (2) after that acondenser (7) has a liquid refrigerant pipe which passes through a pump(4) and connects the evaporator (8), the second expander (2) has a vaporchannel which passes through the second high-temperature heat exchanger(6) and the high-temperature regenerator (10) connect thehigh-temperature heat exchanger (5), a compressor (3) has a vaporchannel which passes through the high-temperature regenerator (10) andconnects the high-temperature heat exchanger (5), the high-temperatureheat exchanger (5) has a vapor channel connected an expander (1), theexpander (1) has a low-pressure vapor channel which passes through thehigh-temperature regenerator (10) connects the second high-temperatureheat exchanger (6), the evaporator (8) has a low-pressure vapor channelconnected the compressor (3) and the condenser (7) respectively afterthat the second high-temperature heat exchanger (6) has a low-pressurevapor channel connected the evaporator (8), wherein the high-temperatureheat exchanger (5) has the heat source medium channels connected theoutside, or the second high-temperature heat exchanger (6) has the heatsource medium channels connected the outside, the condenser (7) has thecooling medium channel connected the outside, or the evaporator (8) hasthe heat source medium channel connected the outside, the expander (1)and the second expander (2) connect the compressor (3) and transmitpower, wherein or the expander (1) and the second expander (2) connectthe compressor (3) and the pump (4) and transmit power.
 6. A combinedcycle power device comprising an expander, the second expander, acompressor, a pump, a high-temperature heat exchanger, the secondhigh-temperature heat exchanger, a condenser and an evaporator, whereinan evaporator (8) has a vapor channel connected with the second expander(2) after that a condenser (7) has a liquid refrigerant pipe whichpasses through a pump (4) and connects the evaporator (8), the secondexpander (2) has a vapor channel which passes through the secondhigh-temperature heat exchanger (6) and connects the expander (1), acompressor (3) has a vapor channel connects the high-temperature heatexchanger (5), the high-temperature heat exchanger (5) has a vaporchannel which passes through a intermediate vapor inlet channel andconnects the expander (1), the evaporator (8) has a low-pressure vaporchannel connected with the compressor (3) and the condenser (7)respectively after that the expander (1) has a low-pressure vaporchannel connected with the evaporator (8), wherein the high-temperatureheat exchanger (5) and the second high-temperature heat exchanger (6)have heat source medium channels connected the outside, the condenser(7) has the cooling medium channel connected with the outside, or theevaporator (8) has the heat source medium channel connected with theoutside, the expander (1) and the second expander (2) connect thecompressor (3) and transmit power, wherein or the expander (1) and thesecond expander (2) connect the compressor (3) and the pump (4) andtransmit power.
 7. A combined cycle power device comprising an expander,the second expander, a compressor, a pump, a high-temperature heatexchanger, the second high-temperature heat exchanger, a condenser andan evaporator, wherein an evaporator (8) has a vapor channel connectedthe second expander (2) after that a condenser (7) has a liquidrefrigerant pipe which passes through a pump (4) and connects theevaporator (8), the second expander (2) has a vapor channel connectedthe second high-temperature heat exchanger (6), the secondhigh-temperature heat exchanger (6) has a vapor channel which passesthrough a intermediate vapor inlet channel and connects a expander (1),a compressor (3) has a vapor channel which passes through thehigh-temperature heat exchanger (5) and connects the expander (1), theevaporator (8) has a low-pressure vapor channel connected the compressor(3) and the condenser (7) respectively after that the expander (1) has alow-pressure vapor channel connected the evaporator (8), wherein thehigh-temperature heat exchanger (5) and the second high-temperature heatexchanger (6) also have heat source medium channels connected theoutside, the condenser (7) has the cooling medium channel connected theoutside, or the evaporator (8) has the heat source medium channelconnected the outside, the expander (1) and the second expander (2)connect the compressor (3) and transmit power, wherein or the expander(1) and the second expander (2) connect the compressor (3) and the pump(4) and transmit power.
 8. A combined cycle power device comprising anexpander, the second expander, a compressor, a pump, a high-temperatureheat exchanger, the second high-temperature heat exchanger, a condenser,an evaporator and a high-temperature regenerator, wherein an evaporator(8) has a vapor channel connected the second expander (2) after that acondenser (7) has a liquid refrigerant pipe which passes through a pump(4) and connects the evaporator (8), the second high-temperature heatexchanger (6) has a vapor channel connected the second expander (1), acompressor (3) has a vapor channel which passes through thehigh-temperature regenerator (10) and the high-temperature heatexchanger (5) and connects the expander (1), the expander (1) has alow-pressure vapor channel connected the high-temperature regenerator(10), the evaporator (8) has a low-pressure vapor channel connected thecompressor (3) and the condenser (7) respectively after that thehigh-temperature regenerator (10) has a low-pressure vapor channelconnected the evaporator (8), wherein the high-temperature heatexchanger (5) and the second high-temperature heat exchanger (6) alsohave heat source medium channels connected the outside, the condenser(7) has the cooling medium channel connected the outside, or theevaporator (8) has the heat source medium channel connected the outside,the expander (1) and the second expander (2) connect the compressor (3)and transmit power, wherein or the expander (1) and the second expander(2) connect the compressor (3) and the pump (4) and transmit power.
 9. Acombined cycle power device comprising an expander, the second expander,a compressor, a pump, a high-temperature heat exchanger, the secondhigh-temperature heat exchanger, a condenser, an evaporator and thethird expander, wherein an evaporator (8) has a vapor channel connectedthe second expander (2) after that a condenser (7) has a liquidrefrigerant pipe which passes through a pump (4) and connects theevaporator (8), the second expander (2) has a vapor channel which passesthrough the second high-temperature heat exchanger (6) and connects thethird expander (11), the third expander (11) has a low-pressure vaporchannel connected the evaporator (8), a compressor (3) has a vaporchannel which passes through the high-temperature heat exchanger (5) andconnects a expander (1), the expander (1) has a low-pressure vaporchannel connected the evaporator (8), the evaporator (8) has alow-pressure vapor channel connected the compressor (3) and thecondenser (7) respectively, wherein the high-temperature heat exchanger(5) and the second high-temperature heat exchanger (6) also have heatsource medium channels connected the outside, the condenser (7) has thecooling medium channel connected the outside, or the evaporator (8) hasthe heat source medium channel connected the outside, the expander (1),the second expander (2) and the third expander (11) connect thecompressor (3) and transmit power, wherein or the expander (1), thesecond expander (2) and the third expander (11) connect the compressor(3) and the pump (4) and transmit power.
 10. A combined cycle powerdevice comprising an expander, the second expander, a compressor, apump, a high-temperature heat exchanger, the second high-temperatureheat exchanger, a condenser, an evaporator and a heating unit, whereinan evaporator (8) has a vapor channel connected the second expander (2)after that a condenser (7) has a liquid refrigerant pipe which passesthrough a pump (4) and connects the evaporator (8), the second expander(2) has a vapor channel which passes through the second high-temperatureheat exchanger (6) and connects the high-temperature heat exchanger (5),a compressor (3) has a vapor channel connected the high-temperature heatexchanger (5), the high-temperature heat exchanger (5) has a vaporchannel connected an expander (1), an evaporator (8) has a low-pressurevapor channel connected the heating unit (9) after that the expander (1)has a low-pressure vapor channel connected the evaporator (8), a heatingunit (9) has a low-pressure vapor channel connected the compressor (3)and the condenser (7) respectively, wherein the high-temperature heatexchanger (5) and the second high-temperature heat exchanger (6) alsohave heat source medium channels connected the outside, the condenser(7) has the cooling medium channel connected the outside, the evaporator(8) has the heat source medium channel connected the outside, theheating unit (9) has the heated medium channel connected the outside,the expander (1) and the second expander (2) connect the compressor (3)and transmit power, wherein or the expander (1) and the second expander(2) connect the compressor (3) and the pump (4) and transmit power. 11.A combined cycle power device comprising an expander, the secondexpander, a compressor, a pump, a high-temperature heat exchanger, thesecond high-temperature heat exchanger, a condenser, an evaporator, thesecond compressor and the third high-temperature heat exchanger, whereinan evaporator (8) has a vapor channel connected the second expander (2)after that a condenser (7) has a liquid refrigerant pipe which passesthrough a pump (4) and connects the evaporator (8), the second expander(2) has a vapor channel which passes through the second high-temperatureheat exchanger (6) and connects the high-temperature heat exchanger (5),a compressor (3) has a vapor channel connected the high-temperature heatexchanger (5), the high-temperature heat exchanger (5) has a vaporchannel connected the second compressor (12), the second compressor (12)has a vapor channel which passes through the third high-temperature heatexchanger (13) connects an expander (1), the evaporator (8) has alow-pressure vapor channel connected the compressor (3) and thecondenser (7) respectively after that the expander (1) has alow-pressure vapor channel connected the evaporator (8), wherein thehigh-temperature heat exchanger (5), the second high-temperature (6) andthe third high-temperature heat exchanger (13) also have heat sourcemedium channels connected the outside, the condenser (7) has the coolingmedium channel connected the outside, or the evaporator (8) has the heatsource medium channel connected the outside, the expander (1) and thesecond expander (2) connect the compressor (3) and the second compressor(12) and transmit power, wherein or the expander (1) and the secondexpander (2) connect the compressor (3) and the pump (4) and transmitpower.
 12. A combined cycle power device comprising an expander, thesecond expander, a compressor, a pump, a high-temperature heatexchanger, the second high-temperature heat exchanger, a condenser, anevaporator, the third expander and the third high-temperature heatexchanger, wherein an evaporator (8) has a vapor channel connected thesecond expander (2) after that a condenser (7) has a liquid refrigerantpipe which passes through a pump (4) and connects the evaporator (8),the second expander (2) has a vapor channel which passes through thesecond high-temperature heat exchanger (6) and connects thehigh-temperature heat exchanger (5), a compressor (3) has a vaporchannel connected the high-temperature heat exchanger (5), thehigh-temperature heat exchanger (5) has a vapor channel connected thethird expander (11), the third expander (11) has a vapor channel whichpasses through the third high-temperature heat exchanger (13) connectsan expander (1), the evaporator (8) has a low-pressure vapor channelconnected the compressor (3) and the condenser (7) respectively afterthat the expander (1) has a low-pressure vapor channel connected theevaporator (8), wherein the high-temperature heat exchanger (5), thesecond high-temperature (6) and the third high-temperature heatexchanger (13) also have heat source medium channels connected theoutside, the condenser (7) has the cooling medium channel connected theoutside, or the evaporator (8) has the heat source medium channelconnected the outside, the expander (1), the second expander (2) and thethird expander (11) connect the compressor (3) and the second compressor(12) and transmit power, wherein or the expander (1), the secondexpander (2) and the third expander (11) connect the compressor (3) andthe pump (4) and transmit power.
 13. A combined cycle power devicecomprising an expander, the second expander, a compressor, a pump, ahigh-temperature heat exchanger, the second high-temperature heatexchanger, a condenser, an evaporator, a high-temperature regenerator,the second compressor and the third high-temperature heat exchanger,wherein an evaporator (8) has a vapor channel connected the secondexpander (2) after that a condenser (7) has a liquid refrigerant pipewhich passes through a pump (4) and connects the evaporator (8), thesecond expander (2) has a vapor channel which passes through the secondhigh-temperature heat exchanger (6) and the high-temperature regenerator(10) and connects the high-temperature heat exchanger (5), a compressor(3) has a vapor channel which passes through the high-temperatureregenerator (10) and connects the high-temperature heat exchanger (5),the high-temperature heat exchanger (5) has a vapor channel connectedthe second compressor (12), the second compressor (12) has a vaporchannel which passes through the third high-temperature heat exchanger(13) connects an expander (1), the expander (1) has a low-pressure vaporchannel connected the high-temperature regenerator (10), the evaporator(8) has a low-pressure vapor channel connected the compressor (3) andthe condenser (7) respectively after that the high-temperatureregenerator (10) has a low-pressure vapor channel connected theevaporator (8), the high-temperature heat exchanger (5), wherein Thesecond high-temperature (6) and the third high-temperature heatexchanger (13) also have heat source medium channels connected theoutside, the condenser (7) has the cooling medium channel connected theoutside, or the evaporator (8) has the heat source medium channelconnected the outside, the expander (1) and the second expander (2)connect the compressor (3) and the second compressor (12) and transmitpower, wherein or the expander (1) and the second expander (2) connectthe compressor (3) and the pump (4) and transmit power.
 14. A combinedcycle power device comprising an expander, the second expander, acompressor, a pump, a high-temperature heat exchanger, the secondhigh-temperature heat exchanger, a condenser, an evaporator, ahigh-temperature regenerator, the third expander and the thirdhigh-temperature heat exchanger, wherein an evaporator (8) has a vaporchannel connected the second expander (2) after that a condenser (7) hasa liquid refrigerant pipe which passes through a pump (4) and connectsthe evaporator (8), the second expander (2) has a vapor channel whichpasses through the second high-temperature heat exchanger (6) and ahigh-temperature regenerator (10) and connects the high-temperature heatexchanger (5), a compressor (3) has a vapor channel which passes throughthe high-temperature regenerator (10) and connects the high-temperatureheat exchanger (5), the high-temperature heat exchanger (5) has a vaporchannel connected the third expander (11), the third expander (11) has avapor channel which passes through the third high-temperature heatexchanger (13) connects an expander (1), an expander (1) has alow-pressure vapor channel connected the high-temperature regenerator(10), the evaporator (8) has a low-pressure vapor channel connected thecompressor (3) and the condenser (7) respectively after that thehigh-temperature regenerator (10) has a low-pressure vapor channelconnected the evaporator (8), wherein the high-temperature heatexchanger (5), the second high-temperature (6) and the thirdhigh-temperature heat exchanger (13) also have heat source mediumchannels connected the outside, the condenser (7) has the cooling mediumchannel connected the outside, or the evaporator (8) has the heat sourcemedium channel connected the outside, the expander (1), the secondexpander (2) and the third expander (11) connect the compressor (3) andthe second compressor (12) and transmit power, wherein or the expander(1), the second expander (2) and the third expander (11) connect thecompressor (3) and the pump (4) and transmit power.
 15. The deviceaccording to any one of claim 1-14, wherein adding a low temperatureregenerator and the second pump, adjusting that the condenser (7) has aliquid refrigerant pipe which passes through a pump (4) and connects theevaporator (8) to that the condenser (7) has a liquid refrigerant pipewhich passes through a pump (4) and connects a low temperatureregenerator (14), the compressor (3) adds the vapor extraction channelconnected the low temperature regenerator (14), the low temperatureregenerator (14) has a liquid refrigerant pipe which passes through thesecond pump (15) and connects with the evaporator (8), a combined cyclepower device is formed.